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mbColorLib: Beginning to add MaxHue, MaxSaturation and MaxValue properties to HSV ColorPickers
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@5535 8e941d3f-bd1b-0410-a28a-d453659cc2b4
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wp_xxyyzz
@@ -18,14 +18,21 @@ uses
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type
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TSColorPicker = class(TmbTrackBarPicker)
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private
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FVal, FHue, FSat: integer;
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FVal, FHue, FSat: Double;
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FMaxVal, FMaxHue, FMaxSat: Integer;
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function ArrowPosFromSat(s: integer): integer;
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function SatFromArrowPos(p: integer): integer;
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function GetHue: Integer;
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function GetSat: Integer;
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function GetVal: Integer;
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function GetSelectedColor: TColor;
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procedure SetSelectedColor(c: TColor);
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procedure SetHue(h: integer);
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procedure SetSat(s: integer);
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procedure SetValue(v: integer);
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procedure SetMaxHue(h: Integer);
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procedure SetMaxSat(s: Integer);
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procedure SetMaxVal(v: Integer);
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protected
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procedure Execute(tbaAction: integer); override;
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function GetArrowPos: integer; override;
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@@ -34,9 +41,12 @@ type
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public
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constructor Create(AOwner: TComponent); override;
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published
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property Hue: integer read FHue write SetHue default 0;
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property Saturation: integer read FSat write SetSat default 255;
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property Value: integer read FVal write SetValue default 255;
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property Hue: integer read GetHue write SetHue;
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property Saturation: integer read GetSat write SetSat;
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property Value: integer read GetVal write SetValue;
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property MaxHue: Integer read FMaxHue write SetMaxHue default 359;
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property MaxSaturation: Integer read FMaxSat write SetMaxSat default 255;
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property MaxValue: Integer read FMaxVal write SetMaxVal default 255;
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property SelectedColor: TColor read GetSelectedColor write SetSelectedColor default clRed;
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end;
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@@ -51,13 +61,15 @@ uses
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constructor TSColorPicker.Create(AOwner: TComponent);
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begin
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inherited;
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FGradientWidth := 256;
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FMaxHue := 359;
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FMaxSat := 255;
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FMaxVal := 255;
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FGradientWidth := FMaxSat + 1;
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FGradientHeight := 12;
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FHue := 0;
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FVal := 255;
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FArrowPos := ArrowPosFromSat(0);
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FChange := false;
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SetSat(255);
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FHue := 0;
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FVal := 1.0;
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SetSat(FMaxSat);
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HintFormat := 'Saturation: %value (selected)';
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FManual := false;
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FChange := true;
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@@ -111,15 +123,15 @@ end;
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function TSColorPicker.GetGradientColor(AValue: Integer): TColor;
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begin
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Result := HSVtoColor(FHue, AValue, FVal);
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Result := HSVtoColor(FHue, AValue/FMaxSat, FVal);
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end;
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procedure TSColorPicker.SetValue(v: integer);
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begin
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Clamp(v, 0, 255);
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if FVal <> v then
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Clamp(v, 0, FMaxVal);
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if GetVal() <> v then
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begin
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FVal := v;
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FVal := v / FMaxVal;
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FManual := false;
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CreateGradient;
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Invalidate;
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@@ -129,10 +141,10 @@ end;
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procedure TSColorPicker.SetHue(h: integer);
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begin
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Clamp(h, 0, 360);
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if FHue <> h then
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Clamp(h, 0, FMaxHue);
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if GetHue() <> h then
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begin
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FHue := h;
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FHue := h / FMaxHue;
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CreateGradient;
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FManual := false;
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Invalidate;
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@@ -142,10 +154,10 @@ end;
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procedure TSColorPicker.SetSat(s: integer);
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begin
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Clamp(s, 0, 255);
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if FSat <> s then
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Clamp(s, 0, FMaxSat);
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if GetSat() <> s then
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begin
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FSat := s;
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FSat := s / FMaxSat;
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FManual := false;
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FArrowPos := ArrowPosFromSat(s);
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Invalidate;
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@@ -159,13 +171,13 @@ var
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begin
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if Layout = lyHorizontal then
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begin
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a := Round(((Width - 12)/255)*s);
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a := Round(s / FMaxSat * (Width - 12));
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if a > Width - FLimit then a := Width - FLimit;
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end
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else
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begin
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s := 255 - s;
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a := Round(((Height - 12)/255)*s);
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s := FMaxSat - s;
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a := Round(s / FMaxSat * (Height - 12));
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if a > Height - FLimit then a := Height - FLimit;
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end;
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if a < 0 then a := 0;
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@@ -177,24 +189,69 @@ var
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r: integer;
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begin
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if Layout = lyHorizontal then
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r := Round(p/((Width - 12)/255))
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r := Round(p / (Width - 12) * FMaxSat)
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else
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r := Round(255 - p/((Height - 12)/255));
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Clamp(r, 0, 255);
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r := Round(FMaxSat - p / (Height - 12) * FMaxSat);
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Clamp(r, 0, FMaxSat);
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Result := r;
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end;
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function TSColorPicker.GetHue: Integer;
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begin
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Result := round(FHue * FMaxHue);
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end;
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function TSColorPicker.GetSat: Integer;
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begin
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Result := round(FSat * FMaxSat);
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end;
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function TSColorPicker.GetVal: Integer;
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begin
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Result := round(FVal * FMaxVal);
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end;
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procedure TSColorPicker.SetMaxHue(h: Integer);
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begin
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if h = FMaxHue then
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exit;
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FMaxHue := h;
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CreateGradient;
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if FChange and Assigned(OnChange) then OnChange(Self);
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Invalidate;
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end;
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procedure TSColorPicker.SetMaxSat(s: Integer);
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begin
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if s = FMaxSat then
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exit;
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FMaxSat := s;
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FGradientWidth := FMaxSat + 1;
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CreateGradient;
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if FChange and Assigned(OnChange) then OnChange(Self);
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Invalidate;
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end;
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procedure TSColorPicker.SetMaxVal(v: Integer);
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begin
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if v = FMaxVal then
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exit;
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FMaxVal := v;
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CreateGradient;
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if FChange and Assigned(OnChange) then OnChange(Self);
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Invalidate;
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end;
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function TSColorPicker.GetSelectedColor: TColor;
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begin
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if not WebSafe then
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Result := HSVtoColor(FHue, FSat, FVal)
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else
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Result := GetWebSafe(HSVtoColor(FHue, FSat, FVal));
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Result := HSVToColor(FHue, FSat, FVal);
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if WebSafe then
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Result := GetWebSafe(Result);
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end;
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function TSColorPicker.GetSelectedValue: integer;
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begin
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Result := FSat;
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Result := GetSat();
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end;
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procedure TSColorPicker.SetSelectedColor(c: TColor);
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@@ -202,7 +259,7 @@ var
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h, s, v: integer;
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begin
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if WebSafe then c := GetWebSafe(c);
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RGBToHSV(GetRValue(c), GetGValue(c), GetBValue(c), h, s, v);
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RGBToHSVRange(GetRValue(c), GetGValue(c), GetBValue(c), h, s, v);
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FChange := false;
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SetHue(h);
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SetSat(s);
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@@ -214,38 +271,41 @@ end;
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function TSColorPicker.GetArrowPos: integer;
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begin
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Result := ArrowPosFromSat(FSat);
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if FMaxSat = 0 then
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Result := inherited GetArrowPos
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else
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Result := ArrowPosFromSat(GetSat());
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end;
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procedure TSColorPicker.Execute(tbaAction: integer);
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begin
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case tbaAction of
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TBA_Resize:
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SetSat(FSat);
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SetSat(GetSat());
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TBA_MouseMove:
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FSat := SatFromArrowPos(FArrowPos);
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SetSat(SatFromArrowPos(FArrowPos));
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TBA_MouseDown:
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FSat := SatFromArrowPos(FArrowPos);
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SetSat(SatFromArrowPos(FArrowPos));
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TBA_MouseUp:
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FSat := SatFromArrowPos(FArrowPos);
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SetSat(SatFromArrowPos(FArrowPos));
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TBA_WheelUp:
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SetSat(FSat + Increment);
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SetSat(GetSat() + Increment);
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TBA_WheelDown:
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SetSat(FSat - Increment);
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SetSat(GetSat() - Increment);
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TBA_VKLeft:
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SetSat(FSat - Increment);
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SetSat(GetSat() - Increment);
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TBA_VKCtrlLeft:
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SetSat(0);
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TBA_VKRight:
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SetSat(FSat + Increment);
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SetSat(GetSat() + Increment);
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TBA_VKCtrlRight:
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SetSat(255);
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SetSat(FMaxSat);
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TBA_VKUp:
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SetSat(FSat + Increment);
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SetSat(GetSat() + Increment);
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TBA_VKCtrlUp:
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SetSat(255);
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SetSat(FMaxSat);
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TBA_VKDown:
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SetSat(FSat - Increment);
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SetSat(GetSat() - Increment);
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TBA_VKCtrlDown:
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SetSat(0);
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else
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